/* Target-dependent code for GNU/Linux running on PA-RISC, for GDB.
- Copyright (C) 2004, 2006 Free Software Foundation, Inc.
+ Copyright (C) 2004, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "gdbcore.h"
#include "dwarf2-frame.h"
#include "value.h"
#include "regset.h"
+#include "regcache.h"
#include "hppa-tdep.h"
#include "elf/common.h"
-#if 0
-/* Convert DWARF register number REG to the appropriate register
- number used by GDB. */
+/* Map DWARF DBX register numbers to GDB register numbers. */
static int
-hppa_dwarf_reg_to_regnum (int reg)
+hppa_dwarf_reg_to_regnum (struct gdbarch *gdbarch, int reg)
{
- /* registers 0 - 31 are the same in both sets */
- if (reg < 32)
+ /* The general registers and the sar are the same in both sets. */
+ if (reg <= 32)
return reg;
- /* dwarf regs 32 to 85 are fpregs 4 - 31 */
- if (reg >= 32 && reg <= 85)
- return HPPA_FP4_REGNUM + (reg - 32);
+ /* fr4-fr31 (left and right halves) are mapped from 72. */
+ if (reg >= 72 && reg <= 72 + 28 * 2)
+ return HPPA_FP4_REGNUM + (reg - 72);
- warning (_("Unmapped DWARF Register #%d encountered."), reg);
+ warning (_("Unmapped DWARF DBX Register #%d encountered."), reg);
return -1;
}
-#endif
static void
-hppa_linux_target_write_pc (CORE_ADDR v, ptid_t ptid)
+hppa_linux_target_write_pc (struct regcache *regcache, CORE_ADDR v)
{
/* Probably this should be done by the kernel, but it isn't. */
- write_register_pid (HPPA_PCOQ_HEAD_REGNUM, v | 0x3, ptid);
- write_register_pid (HPPA_PCOQ_TAIL_REGNUM, (v + 4) | 0x3, ptid);
+ regcache_cooked_write_unsigned (regcache, HPPA_PCOQ_HEAD_REGNUM, v | 0x3);
+ regcache_cooked_write_unsigned (regcache, HPPA_PCOQ_TAIL_REGNUM, (v + 4) | 0x3);
}
/* An instruction to match. */
{
char buf[4];
- deprecated_read_memory_nobpt (npc, buf, 4);
+ target_read_memory (npc, buf, 4);
insn[i] = extract_unsigned_integer (buf, 4);
if ((insn[i] & pattern[i].mask) == pattern[i].data)
npc += 4;
};
static struct hppa_linux_sigtramp_unwind_cache *
-hppa_linux_sigtramp_frame_unwind_cache (struct frame_info *next_frame,
+hppa_linux_sigtramp_frame_unwind_cache (struct frame_info *this_frame,
void **this_cache)
{
- struct gdbarch *gdbarch = get_frame_arch (next_frame);
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
struct hppa_linux_sigtramp_unwind_cache *info;
CORE_ADDR pc, scptr;
int i;
info = FRAME_OBSTACK_ZALLOC (struct hppa_linux_sigtramp_unwind_cache);
*this_cache = info;
- info->saved_regs = trad_frame_alloc_saved_regs (next_frame);
+ info->saved_regs = trad_frame_alloc_saved_regs (this_frame);
- pc = frame_pc_unwind (next_frame);
+ pc = get_frame_pc (this_frame);
scptr = hppa_linux_sigtramp_find_sigcontext (pc);
/* structure of struct sigcontext:
/* Skip sc_flags. */
scptr += 4;
- /* GR[0] is the psw, we don't restore that. */
+ /* GR[0] is the psw. */
+ info->saved_regs[HPPA_IPSW_REGNUM].addr = scptr;
scptr += 4;
/* General registers. */
scptr += 4;
}
- /* Pad. */
+ /* Pad to long long boundary. */
scptr += 4;
/* FP regs; FP0-3 are not restored. */
info->saved_regs[HPPA_PCOQ_TAIL_REGNUM].addr = scptr;
scptr += 4;
- info->base = frame_unwind_register_unsigned (next_frame, HPPA_SP_REGNUM);
+ info->saved_regs[HPPA_SAR_REGNUM].addr = scptr;
+
+ info->base = get_frame_register_unsigned (this_frame, HPPA_SP_REGNUM);
return info;
}
static void
-hppa_linux_sigtramp_frame_this_id (struct frame_info *next_frame,
+hppa_linux_sigtramp_frame_this_id (struct frame_info *this_frame,
void **this_prologue_cache,
struct frame_id *this_id)
{
struct hppa_linux_sigtramp_unwind_cache *info
- = hppa_linux_sigtramp_frame_unwind_cache (next_frame, this_prologue_cache);
- *this_id = frame_id_build (info->base, frame_pc_unwind (next_frame));
+ = hppa_linux_sigtramp_frame_unwind_cache (this_frame, this_prologue_cache);
+ *this_id = frame_id_build (info->base, get_frame_pc (this_frame));
}
-static void
-hppa_linux_sigtramp_frame_prev_register (struct frame_info *next_frame,
+static struct value *
+hppa_linux_sigtramp_frame_prev_register (struct frame_info *this_frame,
void **this_prologue_cache,
- int regnum, int *optimizedp,
- enum lval_type *lvalp,
- CORE_ADDR *addrp,
- int *realnump, gdb_byte *valuep)
+ int regnum)
{
struct hppa_linux_sigtramp_unwind_cache *info
- = hppa_linux_sigtramp_frame_unwind_cache (next_frame, this_prologue_cache);
- hppa_frame_prev_register_helper (next_frame, info->saved_regs, regnum,
- optimizedp, lvalp, addrp, realnump, valuep);
+ = hppa_linux_sigtramp_frame_unwind_cache (this_frame, this_prologue_cache);
+ return hppa_frame_prev_register_helper (this_frame,
+ info->saved_regs, regnum);
}
-static const struct frame_unwind hppa_linux_sigtramp_frame_unwind = {
- SIGTRAMP_FRAME,
- hppa_linux_sigtramp_frame_this_id,
- hppa_linux_sigtramp_frame_prev_register
-};
-
/* hppa-linux always uses "new-style" rt-signals. The signal handler's return
address should point to a signal trampoline on the stack. The signal
trampoline is embedded in a rt_sigframe structure that is aligned on
the stack. We take advantage of the fact that sp must be 64-byte aligned,
and the trampoline is small, so by rounding down the trampoline address
we can find the beginning of the struct rt_sigframe. */
-static const struct frame_unwind *
-hppa_linux_sigtramp_unwind_sniffer (struct frame_info *next_frame)
+static int
+hppa_linux_sigtramp_frame_sniffer (const struct frame_unwind *self,
+ struct frame_info *this_frame,
+ void **this_prologue_cache)
{
- CORE_ADDR pc = frame_pc_unwind (next_frame);
+ CORE_ADDR pc = get_frame_pc (this_frame);
if (hppa_linux_sigtramp_find_sigcontext (pc))
- return &hppa_linux_sigtramp_frame_unwind;
+ return 1;
- return NULL;
+ return 0;
}
+static const struct frame_unwind hppa_linux_sigtramp_frame_unwind = {
+ SIGTRAMP_FRAME,
+ hppa_linux_sigtramp_frame_this_id,
+ hppa_linux_sigtramp_frame_prev_register,
+ NULL,
+ hppa_linux_sigtramp_frame_sniffer
+};
+
/* Attempt to find (and return) the global pointer for the given
function.
d_un.d_ptr value is the global pointer. */
static CORE_ADDR
-hppa_linux_find_global_pointer (struct value *function)
+hppa_linux_find_global_pointer (struct gdbarch *gdbarch, struct value *function)
{
struct obj_section *faddr_sect;
CORE_ADDR faddr;
if (osect < faddr_sect->objfile->sections_end)
{
- CORE_ADDR addr;
+ CORE_ADDR addr, endaddr;
+
+ addr = obj_section_addr (osect);
+ endaddr = obj_section_endaddr (osect);
- addr = osect->addr;
- while (addr < osect->endaddr)
+ while (addr < endaddr)
{
int status;
LONGEST tag;
int i, offset;
offset = 0;
- for (i = 0; i < 31; i++)
+ for (i = 0; i < 64; i++)
{
if (regnum == HPPA_FP0_REGNUM + i || regnum == -1)
regcache_raw_supply (regcache, HPPA_FP0_REGNUM + i,
buf + offset);
- offset += 8;
+ offset += 4;
}
}
-/* Linux register set. */
+/* HPPA Linux kernel register set. */
static struct regset hppa_linux_regset =
{
NULL,
set_gdbarch_write_pc (gdbarch, hppa_linux_target_write_pc);
- frame_unwind_append_sniffer (gdbarch, hppa_linux_sigtramp_unwind_sniffer);
+ frame_unwind_append_unwinder (gdbarch, &hppa_linux_sigtramp_frame_unwind);
/* GNU/Linux uses SVR4-style shared libraries. */
set_solib_svr4_fetch_link_map_offsets
set_gdbarch_regset_from_core_section
(gdbarch, hppa_linux_regset_from_core_section);
-#if 0
- /* Dwarf-2 unwinding support. Not yet working. */
- set_gdbarch_dwarf_reg_to_regnum (gdbarch, hppa_dwarf_reg_to_regnum);
set_gdbarch_dwarf2_reg_to_regnum (gdbarch, hppa_dwarf_reg_to_regnum);
- frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);
- frame_base_append_sniffer (gdbarch, dwarf2_frame_base_sniffer);
-#endif
/* Enable TLS support. */
set_gdbarch_fetch_tls_load_module_address (gdbarch,
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